Flash 29er alloy 1 vs 2: which to buy?

Difference is $300 and ~1.5 lbs, as near as I can tell. Money is an issue- any compelling reasons to spend the extra $300 for the Flash 1? Or should I go with the Flash 2 and upgrade later? If so, what parts? I've heard there are some issues with the new 2x10 setups-anyone have experience with the Flash 29er 1? FWIW, I'm not a racer, most of the climbs on my local trails are short and steep (CT singletrack).